百度AI（1）文字识别の身份证识别（C#）

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百度AI（1）文字识别の身份证识别（C#）

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源代码下载

BaiduAI.zip

演示程序界面

源代码
MainWindow.xaml.cs


/* ----------------------------------------------------------
 * 文件名称：MainWindow.xaml.cs
 * 
 * 作者：秦建辉
 * 
 * 微信：splashcn
 * 
 * 博客：http://www.firstsolver.com/wordpress/
 * 
 * 开发环境：
 *      Visual Studio V2017
 *      .NET Framework 4 Client Profile
 *      Baidu.AI 3.3.0.29135
 * 
 * 版本历史：
 *      V1.0	2018年01月03日
 *              百度AI 身份证识别演示示例
 *              
 * 参考资料：
 *      http://ai.baidu.com/
 *      https://www.newtonsoft.com/json
------------------------------------------------------------ */
using Baidu.Aip.Ocr;
using Com.FirstSolver.Splash;
using System.Collections.Generic;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;

namespace Splash
{
    public partial class MainWindow : Window
    {
        private Ocr OcrClient;

        private Dictionary<string, object> options = new Dictionary<string, object>{
            { "detect_direction", "true"},  // 检测图像朝向
            { "detect_risk", "true"} // 开启身份证风险类型
        };

        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            string API_KEY = "你的 Api Key";
            string SECRET_KEY = "你的 Secret Key";
            OcrClient = new Ocr(API_KEY, SECRET_KEY);
        }

        private void ButtonSelectImage_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog
                {
                    Filter = "Image|*.jpg;*.bmp;*.png;*.tif;*.tga;*.ras;*.jp2;*.j2k;*.jpe",
                    DereferenceLinks = true
                };

                this.CenterChild();
                if (dlg.ShowDialog(Owner).Value == true)
                {
                    using (FileStream fs = new FileStream(dlg.FileName, FileMode.Open, FileAccess.Read, FileShare.Read))
                    {
                        byte[] source = new byte[fs.Length];
                        fs.Read(source, 0, (int)fs.Length);

                        BitmapImage bi = new BitmapImage();
                        bi.BeginInit();
                        bi.StreamSource = new MemoryStream(source);
                        bi.EndInit();

                        int Tag = System.Convert.ToInt32(((Button)sender).Tag);
                        if (Tag == 0) ImageIDCardFront.Source = bi; else ImageIDCardBack.Source = bi;

                        // 带参数调用身份证识别
                        var result = OcrClient.Idcard(source, (Tag == 0) ? "front" : "back", options);
                        var error_code = result["error_code"];
                        if (error_code != null)
                        {
                            MessageBoxPlus.Show(this, result["error_msg"].ToString(), "错误", MessageBoxButton.OK, MessageBoxImage.Warning);
                        }
                        else
                        {
                            string image_status = result["image_status"].ToString();
                            if (string.Equals(image_status, "normal"))
                            {
                                if (Tag == 0)
                                {   // 身份证正面信息
                                    TextBlockName.Text = result["words_result"]["姓名"]["words"].ToString();
                                    TextBlockSex.Text = result["words_result"]["性别"]["words"].ToString();
                                    TextBlockNation.Text = result["words_result"]["民族"]["words"].ToString();
                                    TextBlockBorn.Text = result["words_result"]["出生"]["words"].ToString();
                                    TextBlockAddress.Text = result["words_result"]["住址"]["words"].ToString();
                                    TextBlockCardNo.Text = result["words_result"]["公民身份号码"]["words"].ToString();
                                }
                                else
                                {   // 身份证背面信息
                                    TextBlockIssuedAt.Text = result["words_result"]["签发机关"]["words"].ToString();
                                    TextBlockPeriod.Text = result["words_result"]["签发日期"]["words"].ToString() + "-" + result["words_result"]["失效日期"]["words"].ToString();
                                }

                                string risk_type = result["risk_type"].ToString();
                                if (!string.Equals(risk_type, "normal"))
                                {
                                    MessageBoxPlus.Show(this, "risk_type=" + risk_type, "警告", MessageBoxButton.OK, MessageBoxImage.Warning);
                                }
                            }
                            else
                            {
                                MessageBoxPlus.Show(this, "image_status=" + image_status, "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                            }
                        }
                    }
                }
            }
            catch (System.Exception exception)
            {
                ShowExceptionMessage(exception);
            }
        }

        // 显示异常信息
        public void ShowExceptionMessage(System.Exception exception)
        {
            string ErrorMessage = exception.Message;
            if (string.IsNullOrEmpty(ErrorMessage)) ErrorMessage = exception.InnerException.Message;
            MessageBoxPlus.Show(this, ErrorMessage, "异常", MessageBoxButton.OK, MessageBoxImage.Error);
        }
    }
}

MainWindow.xaml


<Window x:Class="Splash.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="百度AI 身份证识别演示示例" SizeToContent="WidthAndHeight" WindowStartupLocation="CenterScreen" Icon="IDCardOCR.ico" Loaded="Window_Loaded" FontSize="16">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="Auto"/>
        </Grid.ColumnDefinitions>

        <GroupBox Grid.Column="0" Padding="4" Header="请选择身份证照片">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>

                <Button Grid.Row="0" Margin="4" Tag="0" Content="请选择身份证正面图像…" Padding="8,0" Height="32" HorizontalAlignment="Left" Click="ButtonSelectImage_Click"></Button>
                <Border Grid.Row="1" Margin="4" HorizontalAlignment="Left" BorderBrush="LightGray" BorderThickness="1">
                    <Image Name="ImageIDCardFront" Width="400" Height="200"/>
                </Border>

                <Button Grid.Row="2" Margin="4" Tag="1" Content="请选择身份证背面图像…" Padding="8,0" Height="32" HorizontalAlignment="Left" Click="ButtonSelectImage_Click"></Button>
                <Border Grid.Row="3" Margin="4" HorizontalAlignment="Left" BorderBrush="LightGray" BorderThickness="1">
                    <Image Name="ImageIDCardBack" Width="400" Height="200"/>
                </Border>
            </Grid>
        </GroupBox>

        <GroupBox Grid.Column="1" Padding="4" Header="识别结果">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>

                <Grid Grid.Row="0">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto"/>
                        <ColumnDefinition Width="Auto"/>
                    </Grid.ColumnDefinitions>

                    <Grid Grid.Column="0">
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                        </Grid.RowDefinitions>

                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition MinWidth="200"/>
                        </Grid.ColumnDefinitions>

                        <Label Grid.Row="0" Grid.Column="0" Content="姓名"/>
                        <Label Grid.Row="1" Grid.Column="0" Content="性别"/>
                        <Label Grid.Row="2" Grid.Column="0" Content="出生"/>
                        <Label Grid.Row="3" Grid.Column="0" Content="住址"/>

                        <TextBlock Grid.Row="0" Grid.Column="1" Name="TextBlockName" Foreground="Blue" VerticalAlignment="Center"/>
                        <Grid Grid.Row="1" Grid.Column="1">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition/>
                            </Grid.ColumnDefinitions>

                            <TextBlock Grid.Column="0" Name="TextBlockSex" Foreground="Blue" VerticalAlignment="Center"/>
                            <Label Grid.Column="1" Content="民族"/>
                            <TextBlock Grid.Column="2" Name="TextBlockNation" Foreground="Blue" VerticalAlignment="Center"/>
                        </Grid>
                        <TextBlock Grid.Row="2" Grid.Column="1" Name="TextBlockBorn" Foreground="Blue" VerticalAlignment="Center"/>
                        <TextBlock Grid.Row="3" Grid.Column="1" Name="TextBlockAddress" Foreground="Blue" VerticalAlignment="Center" TextWrapping="Wrap"/>
                    </Grid>

                    <Image Grid.Column="1" Width="128" Height="128" Name="ImageCardPhoto" Visibility="Collapsed"/>
                </Grid>

                <Grid Grid.Row="1">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto"/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>

                    <Label Grid.Column="0" Content="公民身份号码"/>
                    <TextBlock Grid.Column="1" Foreground="Blue" Name="TextBlockCardNo" VerticalAlignment="Center"/>
                </Grid>

                <Grid Grid.Row="2">
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto"/>
                        <RowDefinition Height="Auto"/>
                    </Grid.RowDefinitions>

                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto"/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>

                    <Label Grid.Row="0" Grid.Column="0" Content="签发机关"/>
                    <Label Grid.Row="1" Grid.Column="0" Content="有效期限"/>

                    <TextBlock Grid.Row="0" Grid.Column="1" Foreground="Blue" Name="TextBlockIssuedAt" VerticalAlignment="Center"/>
                    <TextBlock Grid.Row="1" Grid.Column="1" Foreground="Blue" Name="TextBlockPeriod" VerticalAlignment="Center"/>
                </Grid>
            </Grid>
        </GroupBox>
    </Grid>
</Window>

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百度AI（1）文字识别の身份证识别（C#）